Gigabyte GA-686LX motherboard
Contents
1. rrerriciiie iii 5 1 5 1 YO BUS CONNECTOR PINOUT ii 5 1 bs ISA SLOF PIN OUT iiiter tree decer 5 1 5 1 2 PGI BUS SEOT PIN QUT ao ad 5 2 5 2 1 0 amp MEMORY MAD too eed v teet deyl a ala BS he etd eda yee HA 5 8 5 3 TIMER 8 DMA CHANNELS MAP ii 5 8 54 INTERR UPTUMAP RENA Enn UBER 5 4 5 5 RTC amp CMOS RAM MAP iii 5 5 APPENDIX A POST MESSAQGE lare A 1 APPENDIX B POST CODES n iris kid k k l dy ke k da ku a k Ka WE da E i B 1 APPENDIX C BIOS DEFAULT DRIVE TABLE eneeeeneeeneneennennnnnnnn tnnt C 1 APPENDIX D PROBLEM SHEET reete k KEWE Ke k KE SE ZE k EWE aa D 1 APPENDIX E FCC DOCUMENT Table of Contents Introduction 1 INTRODUCTION 1 1 PREFACE Welcome to use the GA 686LX motherboard The motherboard is a Pentium Il Processor based PC AT compatible system with AGP PCI ISA Bus and has been designed to be the fastest PC AT system There are some new features allow you to operate the system with just the performance you want This manual also explains how to install the motherboard for operation and how to set up your CMOS CONFIGURATION with BIOS SETUP program 1 2 KEY FEATURES a Intel Pentium Il Processor based PC AT compatible mainboard Q Slot 1 supports Pentium Il processor running at 233 633 MHz Intel 440LX chipset Support AGP SDRAM Ultra DMA 33 ID2. FAN Failure or CPU Overheat Intel LDCM support H W monitor power status 5V 12V CPU voltage amp CMOS battery voltage e SPEED 66 MHz system speed 66 MHz AGP bus speed 133MHz 2 mode 33 MHz PCI Bus speed 8 MHz AT bus speed DRAM MEMORY 4 banks 168 pins DIMM module sockets on board Use 8 16 32 64 128 256 MB 60 70 ns DIMM module DRAM 8 1 GB DRAM size Support 3 34 SDRAM EDO type DRAM Support ECC or Non ECC type DRAM e CACHE MEMORY 32 KB 1st cache memory included in CPU 256KB 512 KB 2nd cache in CPU Support DIB speed mode for L2 Cache 1 66MHz 133MHz AGP bus I O BUS SLOTS 4 33MHz Master Slave PCI BUS 3 8MHz 16 bits ISA BUS e IDE PORTS 2 Ultra DMA 33 Bus Master IDE channels on board Using IRQ14 15 Back ward Support Mode 3 4 IDE amp ATAPI CD ROM 2 1 GA 686LX e O PORTS Supports 2 16550 COM ports Using IRQA 3 Supports 1 EPP ECP LPT port Using IRQ7 or 5 and DMAS or 1 Supports 1 1 44 2 88 MB Floppy port Using DMA2 amp IRQ6 Supports 2 USB ports Supports PS 2 Mouse Using IRQ12 Supports PS 2 Keyboard Using IRQ1 e GREEN FUNCTION Suspend mode support Green switch amp LED support IDE amp Display power down support Monitor all IRQ DMA Display I O events e BIOS 256KB FLASH EEPROM Supports Plug amp Play DMI ACPI Function e DIMENSION ATX Form Factor 4 layers PC
3. notice the Pin 1 of DIMM module must match with the Pin 1 of DIMM socket Insert the DRAM DIMM module into the DIMM socket at Vertical angle If there is a wrong direction of Pin 1 the DRAM DIMM module couldn t be inserted into socket completely 3 5 CPU SPEED SETUP The system s speed is fixed to 66 6MHz The user can change the DIP SWITCH S1 selection to set up the CPU speed for 233 633MHz processor The CPU speed must match with the frequency RATIO It will cause system hanging up if the frequency RATIO is higher than CPU s DIP SWITCH S1 FREQ EXT CLK NT CLK Pepe pepe s pu COP m e m j ew pm m mmt Po for ox for es se mh ponimo sores pon p on fo ss e sso Pentum naewe The CPU is a sensitive electric component and it can be easily damaged by static electricity so users must keep it away from metal surface when the CPU is installed onto mainboard 3 6 CMOS RTC amp ISA CFG CMOS SRAM There re RTC amp CMOS SRAM on board they have a power supply from external battery to keep the DATA inviolate amp effective The RTC is a REAL TIME CLOCK device which provides the DATE amp TIME to system The CMOS SRAM is used for keeping the information of system configuration so 3 5 GA 686LX the system can automatically boot OS every time Due to the life time of Battery internal battery is 5 years the user can change a new Battery to replace old one after it can not work 3 7 SPEAKER CONNECT
4. the mainboard carton extract the system board and place it only on a grounded anti static surface component side up Again inspect the board for damage Press down on all of the socket IC s to make sure that they are properly seated Do this only on with the board placed on a firm flat surface 6 DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN DAMAGED You are now ready to install your mainboard The mounting hole pattern on the mainboard matches the ATX system board It is assumed that the chassis is designed for a standard ATX mainboard mounting Place the chassis on the anti static mat and remove the cover Take the clips stand off and screws for mounting the system board and keep them 3 1 GA 686LX separate 3 2 MAINBOARD LAYOUT C CNICOMA FOMBCN2 qum Ke ouse LPT CN3 CN4 CN5 Ji o HT1 J2j FAN POWER m PCI PCI PCI PCH DI BUZZERI 371AB AGPI GA 686LX ATX PIIX4 POWERI SLOT6 SLOT4 SLOT2 DIMM4 Bank 3 DIMM3 Bank 2 DIMM2 Bank 1 BIOS DIMMI Bank 0 BAT1 4 Hi s1 n i CN6 IDE2 RESET HD LED IR GN SW_PWR ON SPEAKER __J3 Ji J5 J6 J7 BTS CN7 IDE1 ELOPPY CN8 PWR LED Figure 3 1 3 3 QUICK REFERENCE FOR JUMPERS amp CONNECTORS CN1 8 1 0 Ports Connector For Serial
5. B 2 2 SOFTWARE DRIVER Intel LDCM optional Health monitor Utility Bus Master IDE Driver e BIOS Licensed AWARD BIOS AT CMOS Setup BIOS Chipset Setup Green Setup Hard Disk Utility included Monitor Health status e O S Operation with MS DOS Windows 95 WINDOWS NT OS 2 NOVELL and SCO UNIX 2 3 ENVIRONMENT e Ambient Temp 0 C to 50 C Operating e Relative Hum 0 to 85 Operating e Altitude 0 to 10 000 feet Operating e Vibration 0 to 1 000 Hz Electricity 4 9 V to 5 2 V Max 20A current at 5V 2 2 Hardware Installation 3 HARDWARE INSTALLATION 3 1 UNPACKING The mainboard package should contain the following e The GA 686LX mainboard e The Retention Mechanism amp Attach Mount e USER S MANUAL for mainboard e Cable set for IDE amp Floppy device e Diskette or CD for Mainboard Utility The mainboard contains sensitive electric components which can be easily damaged by static electricity so the mainboard should be left in its original packing until it is installed Unpacking and installation should be done on a grounded anti static mat The operator should be wearing an anti static wristband grounded at the same point as the anti static mat Inspect the mainboard carton for obvious damage Shipping and handling may cause damage to your board Be sure there are no shipping and handling damages on the board before proceeding After opening
6. E ACPI features Q Support CPU FAN Failure Overheat Alarm amp auto slow down CPU speed Support Intel LDCM Network Manageability Supports 4xDIMMs using 3 3V EDO or SDRAM DIMM module Supports 8 MB 1 GB EDO 512MB SDRAM memory on board Supports ECC or Non ECC type DRAM module 1xAGP slot 4xPCI Bus slots 3xISA Bus slots Supports 2 channels Ultra DMA 33 IDE ports for 4 IDE Device Supports 2xCOM 16550 1xLPT EPP ECP 1x1 44MB Floppy port Supports 2xUSB ports 1xPS 2 Mouse amp 1xPS 2 Keyboard ports D oO D O DO D D O Licensed AWARD BIOS 2M bit FLASH RAM GA 686LX Q ATX form factor Double stack I O connector 4 layers PCB 1 3 PERFORMANCE LIST The following performance data list is the testing results of some popular benchmark testing programs These data are just referred by users and there is no responsibility for different testing data values gotten by users The different Hardware amp Software configuration will result in different benchmark testing results e CPU Pentium II processor e DRAM 64 MB SDRAM e CACHE SIZE 512 KB included in CPU e DISPLAY Matrox Millennium Il 4MB PCI VGA e STORAGE Onboard IDE port e O S Windows95 OSR2 0 e DRIVER Display Driver at 1024 x 768 x 64K colors x 75Hz Triones Bus Master IDE Driver 3 60K Processor Intel Pentium Il 266MHz 300MHz Winbench97 CPU mark32 Business Disk Hi End Disk Business Graphic Hi End Graphic Winstone 97 Bu
7. GA 686LX USER S MANUAL Pentium Il Processor MAINBOARD REV 1 First Edition GA 686LX The author assumes no responsibility for any errors or omissions which may appear in this document nor does it make a commitment to update the information contained herein Third party brands and names are the property of their respective owners SEPTEMBER 03 1997 Taipei Taiwan Table of Contents TABLE OF CONTENT INTRODUCTION ER a aaa 1 1 LA PREFACE A al ande i seni 1 1 12 REV FEATURES eie e a ae ee 1 1 1 3 PERFORMANCE LIST via Ra 1 2 14 BLOCK DIAGRAM iti e derit nte e nere aaa 1 3 1 5 INTRODUCE THE Pentium Il Processor 1 8 2 Id iedie wem 2 1 2 1 HARDWARE Eu aee 2 1 2 2 SOFT WARE coxis intacta ido 2 2 2 3 ENVIRONMENT xir itt aaa bl de e te ates 2 2 3 HARDWARE INSTALLATION cessere eese enne nennen nnnm nnn AKA KAKA A KANA AK KAKA KARA AKA ARA WARA 3 1 3A UNPAGHKIING tice touc teet tl cere ett emot ake cete tetto cedet 3 1 3 2 MAINBOARD LAY OUT ss 12 1a e Encre eee Tenet eere atero R n H Ruha retorno IRA 3 2 3 3 QUICK REFERENCE FOR JUMPERS amp CONNECTORS sene 3 2 3 4 DRAM INSTALLATION ertt tret dic 3 4 3 5 CPU SPEED SETUP deiei aio 3 5 3 6 CMOS RTC amp ISA CFG CMOS SRAM i 3 5 3 7 SPEAKER CONNECTOR INSTALLATION i 3 6 3 8 HARDWARE RESET SWITCH CONNECTOR INSTALLATION 3 9 POWER LED CONNECTOR INSTALLATIO
8. N 3 10 GREEN LED INSTALLATION 3 11 IDE 8 ATAPI DEVICE INSTALLATION ii 3 6 3 12 PERIPHERAL DEVICE INSTALLATION i 3 6 3 13 KEYBOARD amp PS 2 MOUSE INSTALLATION eee ns 3 7 3 14 KEYBOARD SETTING FUNCTION i 3 7 4 BIOS CONFIGURATION rrrrrrriri iii 4 1 A CENTERINGISE RU Piss 4 either itt t eS 4 1 GA 686LX APS CONTROL KEYS md len chic i dt ili li do 4 2 4 9 GETING HEP iere perro cette eiie pep ees 4 3 4 3 1 Main Men iro ore bane En e ao 4 3 4 3 2 Status Page Setup Menu Option Page Setup Menu 4 3 4 4 TNE MAIN MENU tin er REGN NICE 4 3 4 5 STANDARD CMOS SETUP MENU i 4 5 4 6 BIOS FEATURES SETUP ede EE ela ie aus 4 9 4 7 CHIPSET FEATURES SETUP yid yen k Rule yi Hd eee ee ces 4 13 4 8 POWER MANAGEMENT SETUP 4 sesenta 4 14 4 9 PNP PCI CONFIGURATION 4 20 4 10 INTEGRATED PERIPHERALS k adek ak Va danek kak eene yak dak du Ada a ER nnns 4 22 431 LOAD SETUPDEFAULTS rane keliye kola y kel dada da kale te d eda yee k kad 4 27 412 USER PASSWORD cta ias 4 28 4 13 IDE HDD AUTO DETECTION i 4 29 4 14 HDD LOW LEVEL FORMAT i 4 29 4 15 SAVE amp EXI T SETUP Lien E ER nee Re iene 4 30 4 16 EXIT WITHOUT SAVING nennen kk Ka KAK AKA KAK KAK KA AA KAR KARA 4 32 5 AT TECHNICAL INFORMATION
9. OR INSTALLATION There is always a speaker in AT system for sound purpose The 4 Pins connector J3 is used to connect speaker The speaker can work well in both direction of connector when it is installed to the connector J3 on mainboard 3 8 HARDWARE RESET SWITCH CONNECTOR INSTALLATION The RESET switch on panel provides users with HARDWARE RESET function which is almost the same as power on off The system will do a cold start after the RESET switch is pushed and released by user The RESET switch is a 2 PIN connector and should be installed to J4 on mainboard 3 9 POWER LED CONNECTOR INSTALLATION There are system power LED lamps on the panel of case The power LED will light on when system is powered on which is connected to a 3 PIN connector The connector should be connected to J5 of mainboard in correct direction 3 10 IDE amp ATAPI DEVICE INSTALLATION There are two Enhance PCI IDE ports CN6 7 on board which following ATAPI standard SPEC Any one IDE port can connected to two ATAPI devices IDE Hard Disk CD ROM amp Tape Driver so total four ATAPI devices can exist in a system The booting Hard Disk should be the Master device of 1st IDE channel The J6 is the active LED port for ATAPI device 3 11 PERIPHERAL DEVICE INSTALLATION After the I O device installation and jumpers setup the mainboard can be mounted into the case and fixed by screw 3 6
10. port COM A For Serial port2 COM B J1 sloti Hardware Installation For Pentium Il processor installed Pin No J5 POWER ON LED PW LED J6 Hard Disk active LED HD LED Pin No J7 INFRARED Connector IR Function Option 3 3 GA 686LX POWER J8 GN SW On Off for enter suspend Green Mode J9 Soft Power Switch On Off for POWER ON or Suspend IN OUT On 4 sec For POWER OFF before VGA Enable or CMOS setup select delay 4sec For POWER OFF mode J10 Green LED Suspend mode S1 CPU INT EXT FREQ RATIO CPU TYPE CLK RATIO OFF OFF aa 200MHz OFF ON OFF ON 2 ON ON ON ON 333MHz OFF ON ON OFF xs 366MHz ON ON ON OFF X55 POWER ATX POWER connector 3 5 7 13 15 GND aged TAN 8 PowrGod 9 SVSB SandbysbVj 3 4 DRAM INSTALLATION The mainboard can be installed with 4 8 16 32 64 128 256 MB 168 pins DIMM module DRAM and the DRAM speed must be 50 or 60 ns for 3 4 Hardware Installation EDO amp 67 100 MHz for SDRAM The DRAM memory system on mainboard consists of bank 0 1 2 amp bank 3 Each bank consists of 3 PCS 168 pins DIMM module DRAM Because the 168 pins DIMM module is 64 bits width using 1 PCS which can match a 64 bits system The total memory size is 8 MB 1 GB EDO 512MB SDRAM The DRAM installation position refer to Figure 3 1 and
11. siness 62 64 9 Introduction Hi End 30 6 32 6 1 4 BLOCK DIAGRAM 3 3V EDO SDRAM DIMM Sockets Ultra DMA 33 IDE Ports 8661 CIPSET ISA Slots GA 686LX 1 5 INTRODUCE THE Pentium Il Processor amp AGP Figure 1 Retention Mechanism amp attach Mount fw Figure 2 OEM Pentium Il Processor Introduction Figure 3 Heatsink FAN amp Heat sink support for OEM Pentium Il Processor n Figure 4 Boxed Pentium II Processor amp Heat sink support GA 686LX What is AGP The Accelerated Graphics Port AGP is a new port on the Host To PCI bridge device that supports an AGP port The main purpose of the AGP port is to provide fast access to system memory The AGP port can be used either as fast PCI port 32 bit at 66MHz vs 32 bits at 33MHz or as an AGP port which supports 2x data rate a read queue and side band addressing When the 2x data rate is used the port can transmit data at 533Mb sec 66 6 2 4 The read queue can be used to pipeline reads removing the effects of the reads latency Side band addressing can be used to transmit the data address on a separate line in order to further speed the transaction Specification 2 SPECIFICATION 2 1 HARDWARE e CPU Pentium II processor 233 633 MHz 242 pins 66MHz slot1 on board PROTECTION Onboard Buzzer Alarm when detect CPU FAN Failure or CPU Overheat Automatically slow down CPU speed when CPU
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